SpaceXAI Launches Grok 4.5, First Model Co-Developed With Cursor

Executive Briefing

• SpaceXAI debuts Grok 4.5, its first model trained alongside AI coding firm Cursor, targeting coding and agentic tasks
• Trained on tens of thousands of NVIDIA GB300 GPUs using coding, science, engineering, and math datasets
• Priced competitively at $2 per million input tokens and $6 per million output tokens, undercutting OpenAI's GPT-5.6 Sol variant
• Serves as the default model for Grok Build, SpaceXAI's terminal-based coding agent supporting Excel, PowerPoint, and Word tasks
• EU availability delayed until mid-July; SpaceXAI's potential $60 billion acquisition of Cursor remains unannounced